BHPS Documentation - Record Type REGOALT

This Record provides a mechanism for identifying the relationship of each individual in a household
to all others. There are two records for each relationship pair to separately identify the relationship
in either direction (e.g. one record identifies that person 1 is the parent of person 3, while another
record identifies that person 3 is the child of person 1). The relationship codes are not gendered, so
the sex of each person is also given.

The relationship given is that of the second person to the first (e.g. if RPNO
= 1 and ROPNO = 3 and RREL = 4 (natural
child)) then person 3 is the natural child of person 1.